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Your Satisfaction is Absolutely 100% Guaranteed. Here’s What Our Customers Have to Say:

Mohanan Kunnatha
Mohanan Kunnatha 5.0
Joseph Fry
Joseph Fry 5.0

By far the best customer service on HVAC equipment in Maryland. I had the power company offer to do a HVAC upgrade on my commercial property to 25% of the cost. The company that manages this work for the power company hired another HVAC that claimed to a "Air medical professional". After a complete disaster of them attempting to do an install and damaged my roof and my building they where thrown off the job and I threated to sue everyone. The power company contacted Tristate to come handle the problem. Brad their sales guy came out and went threw everything with me of what they where going to do, how they where going to do it. Then had their manager Barry come out and go over everything. They sent out a top notch crew. They replaced 3 units and installed new duck work to make the new system work. The crews where professional. They even followed up after the job was complete to make sure we where happy. 9 months later I had a factory defect failure of one of units. They came out diagnostic it. Got the part warranty and came out and replaced the whole coil free of charge. Which was no small task as it was in the ceil with limited access. I will only recommend them for any HVAC work you need done. Their tech Nick is by far the best HVAC guy I have seen. He almost instantly can figure out a problem with a unit.Read More...

Sam 5.0

Brian was very good!

Angie Perez
Angie Perez 5.0

I have used Tri State for more than 15 years. Great Service, quick response to calls and professional technicians who are on time and very informed

Saed Khalili
Saed Khalili 5.0

He was professional and helpful

Tracy Yang
Tracy Yang 5.0

This is the first time I use TriState, Frank came on time and gave the complete plumbing inspection. I will give them 5 stars.

Bruce Bland
Bruce Bland 5.0

Prompt response and were able to get an earlier appointment time than originally scheduled.


My AC was out. It was 90 degrees in my home. They showed up immediately at fixed my issue. Brian is the best. Thank you Tri-State

Amanda Weaver
Amanda Weaver 5.0

The AC function of my heat pump stopped working. It’s an old unit so I was trying to figure out if should repair or replace. Nick from Tristate came to check it out. He was very, very helpful, courteous, and professional. I feel relieved that they will doing a replacement for me at a price I can handle. I would recommend Tristate to anyone, and if you can make a request for a technician, ask for Nick.Read More...

Mary Sutton
Mary Sutton 5.0

Bryan is very knowledgeable and professional and answers all questions regarding the needed repairs. He is a very respectful person and gets the job done on the spot. He is my “go to” plumber.

We Value Our Customers and Strive for a 5 Star Experience

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